Johnny Manziel drops back to pass during his pro day at McFerren Athletic Center Thursday, March 27, 2014, in College Station. Several NFL coaches and scouts attended the event, including Texans head coach Bill O'Brien and general manger Rick Smith. less

Johnny Manziel drops back to pass during his pro day at McFerren Athletic Center Thursday, March 27, 2014, in College Station. Several NFL coaches and scouts attended the event, including Texans head coach ... more

Johnny Manziel passes the ball during a drill at pro day for NFL football representatives.

Johnny Manziel passes the ball during a drill at pro day for NFL football representatives.

Photo: Patric Schneider / Associated Press

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Photo: Patric Schneider / Associated Press

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Photo: Patric Schneider / Associated Press

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Photo: Patric Schneider / Associated Press

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Photo: Patric Schneider / Associated Press

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Photo: Patric Schneider / Associated Press

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Texans coach Bill O'Brien looks on during the event.

Texans coach Bill O'Brien looks on during the event.

Photo: Patric Schneider / Associated Press

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Photo: John McClain / Houston Chronicle

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Johnny Manziel's father, Paul, with a smile and thumbs up after the pro day.

Johnny Manziel's father, Paul, with a smile and thumbs up after the pro day.

Photo: Brian T. Smith / Houston Chronicle

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George H.W. Bush at the pro day.

George H.W. Bush at the pro day.

Photo: Brent Zwerneman / San Antonio Express-News

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Photo: Brian T. Smith / Houston Chronicle

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Manziel lights up Aggies' indoor complex with exceptional workout

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COLLEGE STATION – Johnny Manziel electrified Texas A&M’s indoor complex on Thursday much like he spent electrifying neighboring Kyle Field the past two seasons.

Manziel performed exceptionally during his pro day before 30 of 32 NFL teams, including 75 NFL personnel members, eight head coaches and eight general managers. Only Chicago and Cleveland didn’t represent at the pro day, according to A&M sports information director Alan Cannon.

Manziel, wearing a helmet and shoulder pads to better emulate a game situation, completed 63 of 65 passes, with one drop. His lone other miscue was a somewhat low throw late in the drills.

“He came out here, he was prepared and he had a good pro day,” said Texans coach Bill O’Brien, whose franchise owns the No. 1 overall selection and will seriously consider Manziel for the pick.

O’Brien added, “This is just one step in the process.”

But it was a big one for Manziel, who appeared to put to rest any concerns about his arm strength and accuracy. It was also highly unusual for a player to don helmet and shoulder pads for a pro day, something that caught the eye of the pro personnel.

“I was obviously going for perfection, so when a couple of balls hit the ground. …” Manziel said. “We wanted to make (the workout) challenging. We wanted to show that we didn’t have anything to hide. It was a blast.”

Manziel is scheduled to spend the rest of the day in private meetings with a handful of teams. The most famous visitor to pro day was George Bush the elder, whose presidential library is on the A&M campus.

When Manziel released his final completion, a beauty along the left sideline, he yelled one simple word that summed up his workout: “Boom!”